Cheapest return flights from Seoul to Ulaanbaatar in May from $201

AirHint found the following cheapest return flights from Seoul (ICN) to Ulaanbaatar (UBN) in May 2026 (see full year).

Return flights

05 May - 14 May Jeju Air direct
05 May - 07 May Jeju Air direct
05 May - 10 May Jeju Air direct
10 May - 14 May Jeju Air direct
10 May - 12 May Jeju Air direct
10 May - 21 May Jeju Air direct
05 May - 19 May Jeju Air direct
12 May - 14 May Jeju Air direct
19 May - 21 May Jeju Air direct
13 May - 19 May Asiana Airlines direct
18 May - 02 Jun Asiana Airlines direct
31 May - 04 Jun Jeju Air direct
19 May - 02 Jun Jeju Air direct
17 May - 01 Jun Jeju Air direct
24 May - 01 Jun Jeju Air direct
20 May - 06 Jun Asiana Airlines direct
20 May - 02 Jun Asiana Airlines direct
20 May - 03 Jun Asiana Airlines direct
20 May - 04 Jun Asiana Airlines direct
31 May - 06 Jun Jeju Air direct

Also check the deals for one-way flights from Seoul to Ulaanbaatar in May.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Ulaanbaatar

Cheap car rent in Ulaanbaatar

Feel free to contact us with any feedback or request another flight research.